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Code Issues 1 Releases Wiki Activity

Address issue #180 - string/check-set

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Fix the function and add test to further clarify that
implementation is correct. Also fix empty string case.
This commit is contained in:
Calvin Rose 2019-11-25 20:27:08 -06:00
parent 6bc400eb8c
commit 74d51ab08b
2 changed files with 5 additions and 4 deletions
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6
src/core/string.c
View File

@ -404,7 +404,6 @@ static Janet cfun_string_checkset(int32_t argc, Janet *argv) {
bitset[index] |= mask;
}
/* Check set */
if (str.len == 0) return janet_wrap_false();
for (int32_t i = 0; i < str.len; i++) {
int index = str.bytes[i] >> 5;
uint32_t mask = 1 << (str.bytes[i] & 0x1F);
@ -613,8 +612,9 @@ static const JanetReg string_cfuns[] = {
{
"string/check-set", cfun_string_checkset,
JDOC("(string/check-set set str)\n\n"
"Checks if any of the bytes in the string set appear in the string str. "
"Returns true if some bytes in set do appear in str, false if no bytes do.")
"Checks that the string str only contains bytes that appear in the string set. "
"Returns true if all bytes in str appear in set, false if some bytes in str do "
"not appear in set.")
},
{
"string/join", cfun_string_join,

3
test/suite6.janet
View File

@ -132,8 +132,9 @@
(assert (string/check-set "abc" "a") "string/check-set 1")
(assert (not (string/check-set "abc" "z")) "string/check-set 2")
(assert (string/check-set "abc" "abc") "string/check-set 3")
(assert (not (string/check-set "abc" "")) "string/check-set 4")
(assert (string/check-set "abc" "") "string/check-set 4")
(assert (not (string/check-set "" "aabc")) "string/check-set 5")
(assert (not (string/check-set "abc" "abcdefg")) "string/check-set 6")
# Marshal and unmarshal pegs
(def p (-> "abcd" peg/compile marshal unmarshal))